Forum Moderators: open
They deduct 20% from Gross Revenue for costs (search serving, account management, technological infrastructure etc). This leaves the Adjusted Gross Revenue (AGR)
They then share the AGR with their partners:
For 250K searches per month or less, the split is 30% of AGR ( This is the same as 24% of Gross Revenue (0.3 x 80))
For 250K - 750K searches per month, the split is 40% of AGR ( This is equivalent to 32% of Gross Revenue (0.4 x 80))
For greater then 750 searches per month, the split is 50% of AGR (This is equivalent to 40% of Gross Revenue (0.5x 80))
However, your site has to match up to their quality control. If you aren't accepted, you might like to try Espotting or Mirago, both of whom are keen to sign up smaller engines I believe.